Difference between revisions of "Learning resources"

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= Introductions =
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{| class=wikitable style="width:50%;float:right"
 
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|{{quote | "I have long been struck by the contrast between the success with which the adventurous learn APL by simply using it, and the frequent failure of lecture courses to communicate the simplicity and applicability of the language."|[[Ken Iverson]]. ''A Working Introduction to APL'', 1981.}}
{{quote | "I have long been struck by the contrast between the success with which the adventurous learn APL by simply using it, and the frequent failure of lecture courses to communicate the simplicity and applicability of the language."|Kenneth E. Iverson, 1981 - ''A Working Introduction to APL''}}
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|}
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To facilitate self-study, the resources here are classified by target audience. However, if you get stuck, don't hesitate to request help in the [[APL Orchard]] chat room or [https://stackoverflow.com/questions/ask?tags=apl ask a question on Stack Exchange].
  
 
== For non-programmers ==
 
== For non-programmers ==
  
 
Some of the best resources for somebody new to APL and programming in general are:
 
Some of the best resources for somebody new to APL and programming in general are:
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<div style="column-width:40em">
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* APL Wiki's [[simple examples]]
 
* The [https://tryapl.org/?tab=3 Learn tab on TryAPL]
 
* The [https://tryapl.org/?tab=3 Learn tab on TryAPL]
* The book [https://www.dyalog.com/mastering-dyalog-apl.htm Mastering Dyalog APL] by Bernard Legrand
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* The book [[Mastering Dyalog APL]] by Bernard Legrand
* The APL Cultivation [https://chat.stackexchange.com/rooms/info/52405/the-apl-orchard?tab=conversations Stack Exchange Lessons]  
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* [http://www.microapl.com/apl/learn_apl.html Learning APL with APLX] (also [http://www.microapl.com/apl/LearningAPLwithAPLX.pdf as PDF])
 
* The [https://tutorial.dyalog.com Zark APL Tutor]
 
* The [https://tutorial.dyalog.com Zark APL Tutor]
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* APL a Day: [https://www.sacrideo.us/apl-a-day-0-introduction/ Introduction], [https://www.sacrideo.us/apl-a-day-1-functions/ Functions], [https://www.sacrideo.us/apl-a-day-2-arrays-values/ Arrays, Values], [https://www.sacrideo.us/apl-a-day-3-arrays-have-shape/ Arrays have Shape]
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* [http://robertson.uk.net/Files/APL1&2.pdf A Practical Introduction to APL 1 & 2] (3 & 4 is [[#For novice APLers|for experts]])
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* Découvrez le langage APL: parts [https://www.youtube.com/watch?v=Nxq1BUUXobM 1], [https://www.youtube.com/watch?v=s-E7BsMg_Qc 2], [https://www.youtube.com/watch?v=csx2Z-GEGPw 3] by Eric Schrafstetter (in French)
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* [https://www.youtube.com/playlist?list=PLgTqamKi1MS3p-O0QAgjv5vt4NY5OgpiM Learn APL with neural networks] (video series)
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* [https://romilly.github.io/o-x-o/an-introduction.html MENACE in APL] (An early Reinforcement Learning project reimplemented in APL)
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* [https://old.aplwiki.com/LearnApl/TutorialContents The tutorial from the old APL Wiki]
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</div>
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Follow one or a couple of these tutorials through and play around a bit. To learn APL the advice is similar to that for learning other languages: have a goal (something you want to accomplish) and try to do it. Along the way you are sure to come across the pitfalls and gotchas of the language, and with time you may come to understand what APL thinking means.
 +
 +
== For programmers unfamiliar with APL ==
 +
 +
This is a list of tutorials and other resources of interest to someone who knows about programming or is familiar with another programming language, but wants to learn more about APL.
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<div style="column-width:20em">
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* APL Wiki's [[advanced examples]]
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* APL Wiki's [[Books]]
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* APL Wiki's [[Papers]]
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* [[APL Cultivation]] (chat lessons)
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* [https://tryapl.org TryAPL online interpreter with lessons]
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* [https://rikedyp.github.io/APLWorkshop APL Workshop]
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* [https://github.com/nooodl/learnxinyminutes-docs/blob/master/apl.apl Learn X in Y minutes]
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* [https://codeburst.io/lets-learn-a-programming-language-5f374e4abae5 Let's Learn A Programming Language]
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* The [[Mastering Dyalog APL]] book
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* [https://tutorial.dyalog.com/ Zark tutorial]
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* [https://github.com/vendethiel/trying.apl Trying APL]
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* [https://www.youtube.com/playlist?list=PLgTqamKi1MS3p-O0QAgjv5vt4NY5OgpiM Learn APL with neural networks] (video series)
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* [https://github.com/annser/annser Artificial Neural Networks]
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* [https://codeburst.io/fizzbuzz-in-apl-a193d1954b4b FizzBuzz]
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* [https://wordsandbuttons.online/apl_deserves_its_renaissance_too.html APL deserves its renaissance too] (interactive explanation of [[John Scholes' Conway's Game of Life]])
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</div>
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== For novice APLers ==
  
Follow one or a couple of these tutorials through and play around a bit. To learn APL the advice is similar to that for learning other languages: have a goal (something you want to accomplish) and try to do it. Along the way you are sure to come across the pitfalls and gotchas of the language, and with time you may come to understand what APL thinking means.
+
* [http://robertson.uk.net/Files/APL3&4.pdf A Practical Introduction to APL 3 & 4]
 +
 
 +
* [https://www.youtube.com/playlist?list=PLgTqamKi1MS3p-O0QAgjv5vt4NY5OgpiM Learn APL with neural networks] (video series)
 +
 
 +
If you already have a fair grasp of APL's [[primitive function]]s and [[primitive operator|operators]], you can sharpen your skills by challenging yourself with these:
 +
* [https://aplcart.info/quiz APLcart Quiz]: Be challenged to write a function for a given task or to explain what a given function does. (Based on [[APLcart]] data.)
 +
 
 +
* APL Crosswords: [https://abrudz.github.io/crosswords/1/ 1] [https://abrudz.github.io/crosswords/4/ 4] [https://abrudz.github.io/crosswords/5/ 5] — Fill in expressions and snippets to fulfil all the clues.
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* [https://www.dyalog.com/2016-year-game.htm 2016 Year Game]: Find APL expressions involving exactly the digits 2 0 1 6 in that order to equal the numbers 0 to 100.
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* [https://www.dyalog.com/2017-code-golf-challenge.htm 2017 Code Golf Challenge]: Find the shortest possible APL expression that evaluates 1…52 without using any number or character literals.
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* [https://www.dyalog.com/student-competition.htm Previous years' problems] from the [[APL Problem Solving Competition]]. Phase I problems are [https://problems.tryapl.org available with automated testing].
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* [[APL-eusis]]: A game for honing your ability to "think in APL".
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* [[Advent of Code]]: A collection of small programming puzzles.
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== For advanced APLers ==
 +
 
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Here is a list of "how-to"s on various subjects:
 +
 
 +
* [https://www.youtube.com/playlist?list=PLgTqamKi1MS3p-O0QAgjv5vt4NY5OgpiM Learn APL with neural networks] (video series)
  
'''If you get stuck, don't hesitate to ask your questions on the [https://chat.stackexchange.com/rooms/52405/the-apl-orchard APL Orchard chat room].'''
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* [[Error trapping with Dyalog APL]]
  
== For non-APL programmers ==
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* [[Error trapping in Dyalog APL forms]]
  
[[I am a programmer but new to APL]]
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* [[Calling APL from other languages]]
  
== For novice APLers ==
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* [[Calling other languages from APL]]
  
[[Intermediate APL]]
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* [[Performance tuning]]
  
== For old APLers ==
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* [[APL on the web]]
  
[[Modern APL for old APLers]]
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* [[Parallel computing]]
  
= How to's =
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* [[Cryptography]] <span style="background:yellow">← Migrate https://old.aplwiki.com/CryptographyWithDyalogAndDotNet</span>
  
== Graphical User Interfaces ==
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* [[WPF XAML Demo]]
  
== Calling APL from other languages ==
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== Haven't used APL in a while? ==
 +
Those who learned APL "in the early days" should note that several implementations have made significant extensions to the language and system in the last decade or two.
  
== Calling other languages from APL ==
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* General video: [https://www.youtube.com/watch?v=XN1l1WiYc_o Dyalog APL for other APL users] ([[assignment]], [[control structure]]s, [[namespace]]s, [[migration level]], [[Bind]], [[user-defined operator]]s, [[dfn]]s, [[Error trapping with Dyalog APL|error trapping]], [[shyness]], [[namelist]]s, [[GCD]], [[LCM]], [[Power operator]], and more)
  
== Performance tuning ==
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* New primitive functions: <source lang=apl inline>⊢</source> [[Identity|Same]], [[Right_identity|Right]]; <source lang=apl inline>⊣</source> [[Identity|Same]], [[Left_identity|Left]]; <source lang=apl inline>⌷</source> [[Materialise]], [[Squad indexing|Index]]; <source lang=apl inline>≡</source> [[Depth]], [[Match]]; <source lang=apl inline>≢</source> [[Tally]], [[Not Match]]; <source lang=apl inline>≠</source> [[Nub Sieve]]; <source lang=apl inline>⍸</source> [[Where]], [[Interval Index]]; <source lang=apl inline>⊆</source> [[Nest]], [[Partition]]
  
== APL on the web ==
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* New primitive operators: <source lang=apl inline>⍨</source> [[Commute]], [[Constant]]; <source lang=apl inline>@</source> [[At]]; <source lang=apl inline>∘</source> [[Bind]], [[Beside]]; <source lang=apl inline>⍤</source> [[Atop operator|Atop]], [[Rank]];  <source lang=apl inline>⍥</source> [[Over]];  <source lang=apl inline>⍤</source> [[Rank operator|Rank]]; <source lang=apl inline>⌸</source> [[Key]]; <source lang=apl inline>⌺</source> [[Stencil]]; <source lang=apl inline>⍠</source> [[Variant]]; <source lang=apl inline>&</source> [[Spawn]]
  
== Parallel computing ==
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* Lambdas ([[dfn]]s): [https://help.dyalog.com/16.0/Content/Language/Defined%20Functions%20and%20Operators/DynamicFunctions/Dynamic%20Functions%20and%20Operators.htm Intro]; [https://help.dyalog.com/latest/Content/Language/Defined%20Functions%20and%20Operators/DynamicFunctions/MultiLine%20Dynamic%20Functions.htm Details]; [https://help.dyalog.com/latest/Content/Language/Defined%20Functions%20and%20Operators/DynamicFunctions/Dynamic%20Operators.htm Operators]; [https://dfns.dyalog.com/n_contents.htm The dfns workspace] (collection of categorized utilities with extensive comments and notes)
  
== Cryptography ==
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* [[Tacit programming]]: [[Dyalog APL]] documentation: [https://help.dyalog.com/16.0/Content/RelNotes14.0/Function%20Trains.htm Intro]; [https://help.dyalog.com/latest/Content/Language/Introduction/Trains.htm Details]; [https://www.youtube.com/watch?v=kt4lMZbn-so short video]; [https://www.youtube.com/watch?v=A2LqqBosvY0 long video]; [https://chat.stackexchange.com/rooms/52405/conversation/lesson-23-transcribing-to-and-reading-trains APL Cultivation lesson]; [[Function composition]]
  
Migrate https://aplwiki.com/CryptographyWithDyalogAndDotNet
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* Other features and concepts: [[Keyword]]s; [[Object-oriented programming]]; [[namespace]]s; [[Total array ordering]]; [[Leading axis theory]]; [[Complex number]]s
  
{{APL programming language}}
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{{APL development}}[[Category:Lists]][[Category:Resources]]

Latest revision as of 08:13, 14 February 2021

"I have long been struck by the contrast between the success with which the adventurous learn APL by simply using it, and the frequent failure of lecture courses to communicate the simplicity and applicability of the language."

Ken Iverson. A Working Introduction to APL, 1981.

To facilitate self-study, the resources here are classified by target audience. However, if you get stuck, don't hesitate to request help in the APL Orchard chat room or ask a question on Stack Exchange.

For non-programmers

Some of the best resources for somebody new to APL and programming in general are:

Follow one or a couple of these tutorials through and play around a bit. To learn APL the advice is similar to that for learning other languages: have a goal (something you want to accomplish) and try to do it. Along the way you are sure to come across the pitfalls and gotchas of the language, and with time you may come to understand what APL thinking means.

For programmers unfamiliar with APL

This is a list of tutorials and other resources of interest to someone who knows about programming or is familiar with another programming language, but wants to learn more about APL.

For novice APLers

If you already have a fair grasp of APL's primitive functions and operators, you can sharpen your skills by challenging yourself with these:

  • APLcart Quiz: Be challenged to write a function for a given task or to explain what a given function does. (Based on APLcart data.)
  • APL Crosswords: 1 4 5 — Fill in expressions and snippets to fulfil all the clues.
  • 2016 Year Game: Find APL expressions involving exactly the digits 2 0 1 6 in that order to equal the numbers 0 to 100.
  • 2017 Code Golf Challenge: Find the shortest possible APL expression that evaluates 1…52 without using any number or character literals.
  • APL-eusis: A game for honing your ability to "think in APL".

For advanced APLers

Here is a list of "how-to"s on various subjects:

Haven't used APL in a while?

Those who learned APL "in the early days" should note that several implementations have made significant extensions to the language and system in the last decade or two.


APL development [edit]
Interface SessionTyping glyphs (on Linux) ∙ FontsText editors
Publications IntroductionsLearning resourcesSimple examplesAdvanced examplesMnemonicsStandardsA Dictionary of APLCase studiesDocumentation suitesBooksPapersVideosPeriodicalsGerman terminologyNeural networks
Sharing code Backwards compatibilityAPLcartAPLTreeAPL-CationDfns workspaceTatin
Vendors APL2000DyalogGNU APL community ∙ IBMIPSASTSC